package Chapter2;
import java.util.Scanner;
public class Show Days{
	public static void main(String[]args){
		System.out.println("请输入年份");
		Scanner inYear = new Scanner(System.in);
		int year = inYear.nextInt();   //输入年
		System.out.println("请输入月份")；
			Scanner inMonth = new Scanner(System.in);
		int month = inMonth.nextInt(); //输入月份
		int numDays = 0;
		switch (month){    //以月份作为分支条件
		case 1:
		case 3:
		case 5:
		case 7:
		case 8:
		case 10:
		case 12:numDays = 31;//1、3、5、7、8、10、12月天数为31
				break;    //跳出switch语句
		case 4:
		case 6:
		case 9:
		case 11:numDays = 30;//4、6、9、11月天数为30
				break;
		case 2:    //对于2月，根据是否为闰年判断当月天数
			if(((year % 4 == 0) && ! (year % 100 ==0)) || (year % 400 == 0)){
				numDays = 29;
			}else{
				numDays = 28;
			}
		break;
		}
	System.out.println(year + "年" + month + "月份" + "有" + numDays + "天")；
	}
}

	